Book-binding



(No Model.)

C. F. JEWETT.

BooK BINDING.

Patented June 9,1891.

vgli/ewes l Zava/afar I 5MG, Jaa/ezt,

'me News. ravens cu., wom-umn.. wsmawu, u. c.

UNITED STATES 'PATENT OFFICE.

CHARLES F. .IEwETT, oF SPRINGFIELD, ASSIeNoR To ALBERT e. JEWETT, oF wESTI-IAMPToN, MASSACHUSETTS.

BOOK-BINDING.

SPECIFICATION forming part of Letters Patent No. 454,003, dated QT une 9, 1891. Application iiled December 19, 1890. Serial No. 375,271. (No model.)

To @ZZ whom t may concern: when said layers are pasted or otherwise sel'3e it known that I, CHARLES F. .IEWE'TT7 a cured the one` upon the other with their forcitiaen of the United States, residing at Ward edges coincident theiuner edge portion Springfield, in the county of Hampden and 3 of the inner layer will project inwardly be- 55 5 Stateof Massachusetts, haveinvented new and yond the inner edge of the outer layer. The useful Improvements in Books, of which the edges of the cover portion 3 are arrangednext following` is a specification. to the edges of the curved back B and hinged Thisinvention relates tobindings for blank thereto by the sheet b of iiexible material, or account books, the object of the invention usually leather, which covers and is pasted 6o ro being the provision of a book of the utmost or cemented on the outside of the curved back simplicity and durability, which, on being B and extended forwardly on the portion 3 of opened, is capable of being spread flat, so as the cover-layer l, and also on the inner edge to present a clear and even surface on which portion of the outer layer 2. It is to be here to Write entirely to the inner back of the book. particularly observed that the said sheet b of 65 The invention consists in the peculiar forflexible material, in addition to being made mation and combination, arrangement, or to adhere to the outer side of the back, is also connection of the parts constituting the bookpasted or made to adhere to the entire outer binding, all as will hereinafter more fully apsurface of the Said portion 3, and being expear, and be set forth in the claims. tended over and stuck upon a part of the 7o zo Reference is tobe had to the accompanying surface of the outer layer next to said pordrawings, in which the present improvements tion 3, said exible sheet material covers are clearly and fully illustrated. the raw inner edge of the cover-layer 2, and,

Figure 1 is a sectional 'view taken across as is vital under the present invention, conthe book when opened. Fig. 2 is in part an stitutes the hinge at d between the edge of 75 end view and in part a cross-section of the the back and the edge of said portion 3. improved book shown as closed. Fig. 3 is a rIhe inner back D, to which the leaf-sections sectional view of a portion of the book simiare secured, and Whether the same is in the lar to the view Fig.1,but illustrating a modiform of one continuous sheet extending for ication or subordinate feature of Construothe whole length of the book or formed in 8o 3o tion. Fig. 4E is a sectional View similar to Fig. sections applied at intervals, is connected to 3, but illustrating a further feature of imthe inside of the cover at the inner edge porprovelnent, to be hereinafter particularlyretion thereof, as usual; and the portion of the ferred to. inner back which lies, when the book is closed,

In the drawings, A A represent the booknext to and within the outer back B, is un- 3 5 covers; B, the outer back, to which the covsecured to the latter, so that when the book ers are hinge connected. C indicates the is opened and the leaves spread to either leaves or sections or series thereof, and D side, as in Fig. l, said inner back may be uprepresents the inner back, to which the leaf- Wardly deflected. Now it will be seen that, sections are secured in the usual manner. due to the hinging of the cover to the back at 9o 4o The outer back B is of the form common in d, and the outer sides of the covers being rabblank-books, being 4concaved and. inwardly beted, as at a, as the book is opened there is turned more or less sharply at its opposite no portion of the cover which acts as an imedges, substantially as Shown. The covers A pediment to the complete opening thereof by are of a step forin at their outer sides near abutting against the curving edge portion G 45 their inner edgesthat is, theouter 'sides of of the back d, as has heretofore been the case the covers at and fora short distance forward with books of ordinary construction. from the inner edges are of rabbeted form, as I am aware that it has been proposed to form shown at a. This ferm of the cover is most the book-cover with the step or rabbet atitsinadvantageously insured by employing inner neredge, and provide a hinge-piece that is free roo 5o and outer layers l and 2, the inner layer beto open andseparate from the entire surface ing somewhat wider than the outer, so that of the portion of the book-cover which correspends with portion iof the presentillustrated book,therebeing substantially i n the said mentioned book a double hinge, and in such book the said portion, which in a manner corresponds to the portion 3 of my improved book, necessarily becomes in use more or less deflected or sprung out of or angular to the general plane of the cover; but so far as I am able to ascertain a book has never heretofore been constructed with the rabbet a at the inner edge portion of the cover, leaving a portion, as 3, which is absolutely rigid, providing the sheet Z), which is secured tothe back and to the surface of the said portion 3, especially at the inner edge of said portion, and which forms thehinge directly at and between the edges of said back and said portion 3, and securing the said inner back in the manner shown; and while this formation and arrangement of the parts is most simple and is one which does not affect the cost of the binding, the book at once becomes at least as eiiicient for the stated purpose as one in which expensive and numerous elements or sections of material are employed.

' To the l,end of insuring the utmost rigidity of the portion 3 of each cover it will often be found desirable, particularly in large books, to provide the plate g of metal between the layers of the cover at the inner portions thereof, the said plate by a section thereof overlying and re-enforcing the portion 3, and such section of the plate g which overlies the portion 3 may be of curved or concave form, as shown, to which portion 3 also conforms, thereby giving a more advantageous and attractive form to t-he covers next to the back.

In Fig. i it will be noticed that the plate g, there also shown as provided, has its inner edge C extended and in the opening of the book acts as a lever upon the inner back, assisting in the elevation of the inner back and the complete opening of the book. This latter feature is deemed of advantage in books essentially constructed under this invention, which are of unusually large size.

It will be noted that the part of the cover constituting the inner edge thereof, which as the book is opened exerts more or less of a prying action on the leaf-sections near their points of connection with the inner cover, has a forcing or prying action on the leafsections through the medium of the interposed portion of the ilexible inner back, which back has capabilities for withstanding the abrading or chating effects of such contact.

\Vl1at I claim as my invention is- '1. In a book, the covers, each consti-nete with the rabbet at its inner edge, having the portion 3, which is formed rigid,the rounded outer back, a sheet of fiexible material, which is secured to the outer surfaces of said portions 3 3 next to the edges thereof, thereby forming the hinge directly at and between the edges of said outer back and of said portions 3, the inner back secured bythe portions thereof which are adjacent its edges to the inner sides of each cover, and the 1eafsections, which are attached to said inner back and by portions of said inner back separated from the said portions 3, all substantially as described and shown.

2. In a book, the covers, each constructed of two layers of unequal width, whereby the rabbet is produced at the inner edge formed by the portion 3 of the inner cover-layer the re-enforcing plate g between the layers and by a portion thereof overlying the said portion 3, the rounded outer back, a sheet of iiexible material, which is secured to the outer surface of said portion 3 at and next to the edge thereof, thereby forming the hinge directly at and between the edges of said back and said portion 3, and the inner back and leaf sections, all in combination and arrrangement substantially as and for the purposes set forth.

3. Ina book, the covers, each constructed of two layers of unequal width, whereby the rabbet is produced at the inner edge formed by the portion 3 of the inner layer and the re-enforcing plate g between the layers and by a portion thereof overlying the said portion 3 and by its inner edge portion G, extended inwardly beyond the edge of the said portion 3, the rounded outer back, a sheet of flexible material, which is secured to the outer surface of said portion 3 at and next to the odge thereof, thereby forming the hinge directly at and between the edges of said back and said portion 3, and the inner back and leaf sections, all in combination and arrangement substantially as and for the purposes set forth.

CITAS. F. JEWE'F'I.

Witnesses:

WM. S. BELLows, J. I). GARFIELD.

ICO 

